EP3398717B1 - Grinding machine - Google Patents

Grinding machine Download PDF

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Publication number
EP3398717B1
EP3398717B1 EP18168887.0A EP18168887A EP3398717B1 EP 3398717 B1 EP3398717 B1 EP 3398717B1 EP 18168887 A EP18168887 A EP 18168887A EP 3398717 B1 EP3398717 B1 EP 3398717B1
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EP
European Patent Office
Prior art keywords
grinding
grinding machine
spindle unit
drive wheel
belt
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EP18168887.0A
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German (de)
French (fr)
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EP3398717A1 (en
Inventor
Holger Armborst
Stefan Kramer
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Niles Werkzeugmaschinen GmbH
Kapp Werkzeugmaschinen GmbH
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Niles Werkzeugmaschinen GmbH
Kapp Werkzeugmaschinen GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition

Definitions

  • the proposed configuration makes it possible to mount or set up the grinding spindle unit on the base unit of the grinding machine very quickly and conveniently and with only a few sources of error.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

Die Erfindung betrifft eine Schleifmaschine, umfassend einen elektrischen Antrieb mit einem Antriebsrad, wobei der Antrieb an einer Basiseinheit der Schleifmaschine angeordnet ist, eine lösbar an der Basiseinheit der Schleifmaschine angeordnete Schleifspindeleinheit, die ein Schleifwerkzeug umfasst, und ein Getriebeelement, das die Drehbewegung des Antriebsrads auf das Schleifwerkzeug überträgt, wobei das Getriebeelement umfasst: ein in der Schleifspindeleinheit gelagertes Treibrad, das mit dem Schleifwerkzeug direkt oder indirekt in Drehverbindung steht, zwei in der Schleifspindeleinheit gelagerte Umlenkräder und einen um das Treibrad und die Umlenkräder geführten Riemen, wobei im montierten Zustand der Schleifspindeleinheit an der Basiseinheit das Antriebsrad zwischen den beiden Umlenkrädern den Riemen kontaktiert und diesen hierdurch antreibt.The invention relates to a grinding machine, comprising an electric drive with a drive wheel, the drive being arranged on a base unit of the grinding machine, a grinding spindle unit which is detachably arranged on the base unit of the grinding machine and comprises a grinding tool, and a gear element which controls the rotary movement of the drive wheel transmits the grinding tool, wherein the transmission element comprises: a drive wheel mounted in the grinding spindle unit, which is directly or indirectly rotationally connected to the grinding tool, two deflection wheels mounted in the grinding spindle unit, and a belt guided around the drive wheel and the deflection wheels, with the grinding spindle unit in the assembled state on the base unit, the drive wheel between the two idler wheels contacts the belt and thereby drives it.

Für spezielle Schleifaufgaben ist es bekannt, eine Schleifmaschine mit speziellen Schleifspindeleinheiten zu versehen, insbesondere in Form von Schleifarmen. Dies ist insbesondere beim Schleifen innenprofilierter Werkstücke relevant. Ein solcher Schleifarm ist beispielsweise in der EP 0 416 151 B1 beschrieben. Der rohrförmige Arm wird hier an seinem einen axialen Ende über eine Antriebswelle angetrieben, wobei ein Ritzel angetrieben wird, über das ein Zahnriemen läuft. Am anderen axialen Ende des Arms ist eine weitere Welle angeordnet, die gleichermaßen ein Ritzel trägt, über das der Zahnriemen läuft. Über diese Welle wird dann die Schleifspindel angetrieben. Der Schleifarm wird an seinem von der Schleifscheibe abgewandten Ende an einer Aufnahme der Schleifmaschine befestigt.For special grinding tasks it is known to provide a grinding machine with special grinding spindle units, in particular in the form of grinding arms. This is particularly relevant when grinding internally profiled workpieces. Such a grinding arm is, for example, in EP 0 416 151 B1 described. The tubular arm is driven here at its one axial end via a drive shaft, a pinion being driven over which a toothed belt runs. At the other axial end of the arm there is another shaft which also carries a pinion over which the toothed belt runs. About this wave is then the Driven grinding spindle. The grinding arm is fastened to a holder of the grinding machine at its end facing away from the grinding wheel.

Eine gattungsgemäße Schleifmaschine offenbart die US 3 929 038 A . Ähnliche und andere Lösungen zeigen die EP 2 036 668 A1 , die DE 199 36 652 A1 , die DE 10 2004 043 397 A1 , die GB 575 276 A , die DE 25 52 259 A1 und die DE 620 052 A . Die DE 17 52 500 B zeigt einen Antrieb für eine Flachschleifmaschine mittels eines Riemens.A generic grinder discloses the U.S. 3,929,038 A . Similar and other solutions show the EP 2 036 668 A1 , the DE 199 36 652 A1 , the DE 10 2004 043 397 A1 , the GB 575 276 A , the DE 25 52 259 A1 and the DE 620 052 A . the DE 17 52 500 B shows a drive for a surface grinder by means of a belt.

In der Regel weist ein solcher Schleifarm keinen eigenen Antrieb auf; vielmehr wird für den Antrieb der Schleifscheibe ein Antrieb genutzt, der in der Schleifmaschine vorhanden ist. Hierfür allerdings muss dann beim Anbringen des Schleifarms an der Basiseinheit der Schleifmaschine ein Antriebsriemen montiert werden.As a rule, such a grinding arm does not have its own drive; Rather, a drive that is present in the grinding machine is used to drive the grinding wheel. For this, however, a drive belt must then be fitted when attaching the sanding arm to the base unit of the sander.

Dieser wird nach dem Anschrauben der Schleifspindeleinheit an der Basiseinheit per Hand eingefädelt. Nach seinem kompletten Montage muss die Riemenspannung eingestellt werden, was zeitaufwendig ist und zudem eine spezielle Expertise erfordert.This is threaded in by hand after the grinding spindle unit has been screwed onto the base unit. After its complete assembly, the belt tension must be adjusted, which is time-consuming and also requires special expertise.

Aus Gründen der Wirtschaftlichkeit ist es dabei erforderlich, einen möglichst schnellen Wechsel des Schleifarms durchzuführen, um die Stillstandszeiten der Maschine gering zu halten. Auf der anderen Seite kommt einer sehr präzisen Positionierung des Schleifarms in der Schleifmaschine und damit in der Aufnahme für den Schleifarm eine wesentliche Bedeutung zu, um das Werkstück präzise bearbeiten zu können.For reasons of economy, it is necessary to change the grinding arm as quickly as possible in order to keep the downtime of the machine to a minimum. On the other hand, a very precise positioning of the grinding arm in the grinding machine and thus in the holder for the grinding arm is of essential importance in order to be able to process the workpiece precisely.

Demgemäß sind bei der vorbekannten Lösung die relativ lange Montagezeit und die benötigte Expertise nachteilig, um einen Wechsel der Schleifspindeleinheit, insbesondere eines Schleifarms, vornehmen zu können. Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Schleifmaschine so weiterzubilden, dass es möglich wird, den Wechsel der Schleifspindeleinheit, insbesondere eines Schleifarms, zu vereinfachen. Somit sollen die Rüstzeiten optimiert werden, die für die Anordnung der Schleifspindeleinheit an der Basiseinheit der Schleifmaschine benötigt werden. Weiterhin soll der Komfort für den Maschinenbediener erhöht werden. Mögliche Fehlerquellen bei der Montage der Schleifspindeleinheit sollen beseitigt werden.Accordingly, in the previously known solution, the relatively long assembly time and the required expertise are disadvantageous in order to be able to change the grinding spindle unit, in particular a grinding arm. The invention is based on the object of further developing a generic grinding machine in such a way that it becomes possible to simplify changing the grinding spindle unit, in particular a grinding arm. This should optimize the set-up times required for arranging the grinding spindle unit on the base unit of the grinding machine. Furthermore, the comfort for the machine operator should be increased. Possible sources of error when assembling the grinding spindle unit should be eliminated.

Die Aufgabe wird durch eine Schleifmaschine gemäß Anspruch 1 gelöst. Die Lösung dieser Aufgabe durch die Erfindung ist dadurch gekennzeichnet, dass die Schleifspindeleinheit und die Basiseinheit der Schleifmaschine Kontaktflächen aufweist, an denen sie im montierten Zustand anliegen, wobei an einer der Kontaktflächen mindestens zwei voneinander beabstandet angeordnete Spannzapfen angeordnet sind, wobei an der anderen der Kontaktflächen zwei korrespondierende Ausnehmungen zur Aufnahme der Spannzapfen angeordnet sind, wobei Verriegelungsmittel angeordnet sind, mit denen die Spannzapfen in den Ausnehmungen verriegelt werden können, so dass die Schleifspindeleinheit relativ zur Basiseinheit lösbar in einer definierten Lage fixiert ist.The object is solved by a grinding machine according to claim 1. The solution to this problem provided by the invention is characterized in that the grinding spindle unit and the base unit of the grinding machine have contact surfaces against which they rest in the assembled state, with at least two clamping spigots arranged spaced apart from one another being arranged on one of the contact surfaces, with the other of the contact surfaces two corresponding recesses are arranged for receiving the clamping spigots, with locking means being arranged with which the clamping spigots can be locked in the recesses, so that the grinding spindle unit is detachably fixed in a defined position relative to the base unit.

Der Riemen ist dabei bevorzugt als Zahnriemen ausgebildet, der sowohl auf der innenliegenden als auch auf der außenliegenden Seite (also beidseitig) mit einer Profilierung versehen ist. Das Antriebsrad, das Treibrad und die beiden Umlenkräder sind bevorzugt als Zahnriemenräder ausgebildet.The belt is preferably designed as a toothed belt, which is provided with a profile both on the inside and on the outside (that is, on both sides). The drive wheel, the drive wheel and the two deflection wheels are preferably designed as toothed belt wheels.

Eines der beiden Umlenkräder ist bevorzugt starr in der Schleifspindeleinheit gelagert, während das andere der beiden Umlenkräder in der Schleifspindeleinheit in Richtung senkrecht zu seiner Drehachse vorzugsweise elastisch verschiebbar gelagert ist. In diesem Falle ist bevorzugt vorgesehen, dass für die Verschiebung des elastisch verschiebbaren Umlenkrades eine Verschiebeweg-Begrenzung vorhanden ist. Die Verschiebeweg-Begrenzung für das elastisch verschiebbare Umlenkrad ist dabei bevorzugt so gewählt, dass im montierten Zustand der Schleifspindeleinheit an der Basiseinheit der Schleifmaschine eine vorgegebene Spannung im Riemen vorliegt. D. h. es stellt sich bei der Anlage der Schleifspindeleinheit an der Basiseinheit quasi automatisch eine gewünschte bestimmte Riemenspannung ein.One of the two deflection wheels is preferably mounted rigidly in the grinding spindle unit, while the other of the two deflection wheels is preferably mounted elastically displaceable in the grinding spindle unit in the direction perpendicular to its axis of rotation. In this case, it is preferably provided that a displacement limiter is provided for the displacement of the elastically displaceable deflection wheel. The limitation of the displacement path for the elastically displaceable deflection wheel is preferably chosen such that when the grinding spindle unit is installed on the base unit of the grinding machine, there is a predetermined tension in the belt. i.e. when the grinding spindle unit is placed on the base unit, a desired, specific belt tension is established almost automatically.

Im montierten Zustand der Schleifspindeleinheit an der Basiseinheit der Schleifmaschine hat das Antriebsrad vorzugsweise über einen Umfangswinkel von mindestens 30° Kontakt mit dem Riemen.When the grinding spindle unit is mounted on the base unit of the grinding machine, the drive wheel preferably has contact with the belt over a circumferential angle of at least 30°.

Die erfindungsgemäße Lösung stellt also auf den Einsatz sogenannter Nullpunktspannsysteme, die als solche bekannt sind, ab und erlaubt ein schnelles Ankoppeln der Schleifspindeleinheit an der Basiseinheit sowie ein leichtes Lösen derselben.The solution according to the invention is therefore based on the use of so-called zero-point clamping systems, which are known as such, and allows the grinding spindle unit to be quickly coupled to the base unit and the same to be easily released.

In der Schleifspindeleinheit und in der Basiseinheit können lösbare Kupplungsmittel zur Übertragung eines unter Druck stehenden Fluids und/oder lösbare Kontaktmittel zur Übertragung von Elektrizität oder von elektrischen Signalen angeordnet sein. Hierbei ist insbesondere daran gedacht, dass die Kupplungsmittel zur Übertragung von Öl, Kühlschmierstoff oder Ölnebel ausgebildet sind. Mit den lösbaren Kontaktmittel zur Übertragung von Elektrizität oder von elektrischen Signalen kann in einfacher Weise eine elektrische Verbindung zwischen der Schleifspindeleinheit und der Schleifmaschine hergestellt werden, was beispielsweise für die Überwachung des Systems wesentlich ist.Releasable coupling means for the transmission of pressurized fluid and/or releasable contact means for the transmission of electricity or electrical signals can be arranged in the grinding spindle unit and in the base unit. In this context, particular consideration is given to the fact that the coupling means are designed to transfer oil, cooling lubricant or oil mist. With the detachable contact means for the transmission of electricity or electrical signals, an electrical connection between the grinding spindle unit and the in a simple manner grinding machine, which is essential, for example, for monitoring the system.

Die Schleifspindeleinheit ist vorzugsweise als Schleifarm oder als Vorsatzspindel ausgebildet.The grinding spindle unit is preferably designed as a grinding arm or as an attachment spindle.

Es können sowohl abrichtbare Schleifscheiben als auch solche mit Stahlgrundkörper verwendet werden, der mit Abrasivmaterial belegt ist.Both dressable grinding wheels and those with a steel body coated with abrasive material can be used.

Durch die vorgeschlagene Ausgestaltung ist es möglich, das Montieren bzw. Rüsten der Schleifspindeleinheit an der Basiseinheit der Schleifmaschine sehr schnell und komfortabel sowie mit nur geringen Fehlerquellen vorzunehmen.The proposed configuration makes it possible to mount or set up the grinding spindle unit on the base unit of the grinding machine very quickly and conveniently and with only a few sources of error.

Ein Verschrauben der verschiedenen Teile, insbesondere betreffend den Riemenantrieb, entfällt. Dies gilt auch für ein aufwändiges Einfädeln des Zahnriemens bei der Montage der Schleifspindeleinheit an der Basiseinheit.There is no need to screw the various parts together, particularly those relating to the belt drive. This also applies to the time-consuming task of threading in the toothed belt when assembling the grinding spindle unit on the base unit.

Sehr vorteilhaft ist es auch, dass das Einstellen der richtigen Vorspannung des Riemens entfällt; die richtige Vorspannung ergibt sich vielmehr automatisch bei der Ankopplung der Schleifspindeleinheit an der Basiseinheit.It is also very advantageous that the belt does not have to be pre-tensioned correctly; rather, the correct pre-tensioning occurs automatically when the grinding spindle unit is coupled to the base unit.

Die vorgeschlagene Konstruktion erlaubt es ferner, dass nach dem Demontieren der Schleifspindeleinheit von der Basiseinheit der Schleifmaschine infolge der gefederten verschiebbaren Anordnung des einen Umlenkrades sichergestellt ist, dass der Riemen beim Abrüsten sicher mit der Schleifspindeleinheit verbunden bleibt.The proposed design also makes it possible after the grinding spindle unit has been dismantled from the base unit of the grinding machine due to the spring-loaded, displaceable arrangement of one deflection wheel to ensure that the belt remains securely connected to the grinding spindle unit during dismantling.

Beim Einsatz des beschriebenen Nullpunktspannsystems ist zudem ein wiederholgenaues und schnelles Wechseln der Schleifspindeleinheit möglich. Somit ist eine Rüstzeit-Optimierung beim Rüsten der Schleifmaschine mit einer Schleifspindeleinheit, insbesondere mit einem Schleifarm, möglich, wobei zudem eine hohe Positionier-Wiederholgenauigkeit erreichbar ist.When using the zero-point clamping system described, it is also possible to change the grinding spindle unit quickly and with repeat accuracy. It is thus possible to optimize the set-up time when setting up the grinding machine with a grinding spindle unit, in particular with a grinding arm, with high positioning repeatability also being achievable.

In den Zeichnungen ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:

Fig. 1
schematisch eine Schleifspindeleinheit in Form eines Schleifarms, wobei die Schleifspindeleinheit an einer Basiseinheit einer Schleifmaschine befestigt bzw. angekoppelt ist,
Fig. 2
einen Teil des Getriebeelements zur Übertragung der Drehbewegung eines Antriebsrad auf eine Schleifscheibe, wobei hier der noch nicht gekoppelte Zustand zwischen der Schleifspindeleinheit und der Basiseinheit dargestellt ist, und
Fig. 3
in der Darstellung nach Fig. 2 der gekoppelte Zustand zwischen der Schleifspindeleinheit und der Basiseinheit.
In the drawings an embodiment of the invention is shown. Show it:
1
schematically a grinding spindle unit in the form of a grinding arm, wherein the grinding spindle unit is attached or coupled to a base unit of a grinding machine,
2
a part of the transmission element for transmitting the rotational movement of a drive wheel to a grinding wheel, the not yet coupled state between the grinding spindle unit and the base unit being shown here, and
3
in the representation 2 the coupled state between the grinding spindle unit and the base unit.

In Figur 1 ist ein Teil einer Schleifmaschine zum Schleifen von Verzahnungen oder Profilen angedeutet, wobei von der Schleifmaschine eine Basiseinheit 3 zu sehen ist, an die eine Schleifspindeleinheit 4 in Form eines Schleifarms angebaut ist, um beispielsweise Innenverzahnungen zu schleifen.In figure 1 a part of a grinding machine for grinding gears or profiles is indicated, with a base unit 3 of the grinding machine being visible, to which a grinding spindle unit 4 in the form of a grinding arm is attached, in order to grind internal gears, for example.

Der Schleifarm 4 ist abschnittsweise als rohrförmiges Gebilde gestaltet, wobei im Inneren desselben ein Treibriemen 15 eine Welle 16 antreibt, die ein Schleifwerkzeug 5, vorliegend in Form einer Schleifscheibe, trägt. Im axialen Endbereich, der dem Schleifwerkzeug 5 gegenüberliegt, ist ein Treibrad 7 angeordnet; demgemäß bilden das Treibrad 7 und die Welle 16 zwei beanstandete Lagerstellen für den Treibriemen 15.The grinding arm 4 is designed in sections as a tubular structure, inside which a drive belt 15 drives a shaft 16 which carries a grinding tool 5, in the present case in the form of a grinding wheel. In the axial end area, which is opposite the grinding tool 5, there is a drive wheel 7 arranged; Accordingly, the drive wheel 7 and the shaft 16 form two bearing points at which the drive belt 15 is located.

In der Basiseinheit 3 ist ein elektrischer Antrieb 1 angeordnet, der ein Antriebsrad 2 aufweist. Das Antriebsmoment des Antriebsrades 2 wird über ein Getriebeelement 6 bis zum Schleifwerkzeug 5 übertragen.An electric drive 1 which has a drive wheel 2 is arranged in the base unit 3 . The drive torque of the drive wheel 2 is transmitted to the grinding tool 5 via a transmission element 6 .

Der Schleifarm 4 ist an der Basiseinheit 3 lösbar ankoppelbar. Beim Ankoppeln der Bauteile 3 und 4 gelangen die beiden Kontaktflächen 12 und 13 zur Anlage. Ein präzises und sicheres Koppeln der Bauteile 3 und 4 erfolgt über ein Nullpunktspannsystem, welches insbesondere Spannzapfen 14 aufweist, die in Ausnehmungen im Gegenbauteil eintreten und hier mittels einer Spannvorrichtung gespannt werden. Nullpunktspannsysteme dieser Art sind als solche im Stand der Technik hinlänglich bekannt und müssen daher hier nicht näher beschrieben werden.The wiper arm 4 can be detachably coupled to the base unit 3 . When the components 3 and 4 are coupled, the two contact surfaces 12 and 13 come into contact. A precise and secure coupling of the components 3 and 4 takes place via a zero-point clamping system, which in particular has clamping pins 14, which enter into recesses in the counter-component and are clamped here by means of a clamping device. Zero-point clamping systems of this type are well known as such in the prior art and therefore do not need to be described in more detail here.

Damit das Ankoppeln des Schleifarms 4 an der Basiseinheit 3 schnell und zuverlässig erfolgen kann und dabei eine sichere Drehmomentenübertragung vom Antriebsrad 2 bis zur Schleifscheibe 5 gewährleistet ist, ist vorgesehen, dass das Getriebeelement 6 zunächst das in der Schleifspindeleinheit 4 gelagertes Treibrad 7 aufweist, das mit dem Schleifwerkzeug 5 direkt oder indirekt - im vorliegenden Falle indirekt über den Treibriemen 15 - in Drehverbindung steht. Weiter vorgesehen sind zwei in der Schleifspindeleinheit 4 gelagerte Umlenkräder 8 und 9, nämlich ein erstes Umlenkrad 8 und ein zweites Umlenkrad 9. Um das Treibrad 7, das erste Umlenkrad 8 und das zweite Umlenkrad 9 ist ein Riemen 10 geführt, der als Zahnriemen ausgebildet ist, der beidseitig mit einer Profilierung versehen ist. Wie in Figur 1 gesehen werden kann, kontaktiert im montierten Zustand der Schleifspindeleinheit 4 an der Basiseinheit 3 das Antriebsrad 2 zwischen dem ersten Umlenkrad 8 und dem zweiten Umlenkrad 9 den Riemen 10. Hierdurch erfolgt eine Drehmomentübertragung vom Antriebsrad 2 zur Schleifscheibe 5.So that the grinding arm 4 can be coupled to the base unit 3 quickly and reliably and a reliable transmission of torque from the drive wheel 2 to the grinding wheel 5 is ensured, it is provided that the gear element 6 first has the drive wheel 7 mounted in the grinding spindle unit 4, which with the grinding tool 5 directly or indirectly - is in rotary connection - in the present case indirectly via the drive belt 15. Also provided are two deflection wheels 8 and 9 mounted in the grinding spindle unit 4, namely a first deflection wheel 8 and a second deflection wheel 9. Around the drive wheel 7, the first deflection wheel 8 and the second deflection wheel 9, a belt 10 is guided, which is designed as a toothed belt , which is profiled on both sides. As in figure 1 can be seen, contacted in the assembled state of the grinding spindle unit 4 on the base unit 3, the drive wheel 2 between the first deflection wheel 8 and the second deflection wheel 9 the belt 10. This results in a torque transmission from the drive wheel 2 to the grinding wheel 5.

Der Ankoppelvorgang der Schleifspindeleinheit 4 an die Basiseinheit 3 ist in den Figuren 2 und 3 noch einmal näher dargestellt; dabei zeigt Figur 2 den noch nicht gekoppelten Zustand, während Figur 3 den komplett gekoppelten Zustand illustriert.The coupling process of the grinding spindle unit 4 to the base unit 3 is shown in FIGS Figures 2 and 3 shown again in more detail; shows figure 2 the not-yet-coupled state while figure 3 illustrates the fully coupled state.

Werden die Bauteile 2 und 3 durch Anlage der Kontaktflächen 12 und 13 gekoppelt, wird das Antriebsrad 2 relativ zu der Einheit, bestehend aus Treibrad 7, erstem Umlenkrad 8 und zweitem Umlenkrad 9, relativ verschoben, was durch den Pfeil in Figur 2 angedeutet ist. Demgemäß nähert sich das Antriebsrad 2 an die Einheit 7, 8, 9 an, was auch durch die gestrichelte Position des Antriebsrads 2 angedeutet ist.If the components 2 and 3 are coupled by the contact surfaces 12 and 13 being in contact, the drive wheel 2 is displaced relative to the unit consisting of the drive wheel 7, the first deflection wheel 8 and the second deflection wheel 9, which is indicated by the arrow in figure 2 is indicated. Accordingly, the drive wheel 2 approaches the unit 7, 8, 9, which is also indicated by the dashed position of the drive wheel 2.

Liegen die Kontaktflächen 12 und 13 aneinander, ist die relative Stellung der genannten Bauteile erreicht, wie sie sich aus Figur 3 (und Figur 1) ergibt.Are the contact surfaces 12 and 13 together, the relative position of said components is reached, as can be seen from figure 3 (and figure 1 ) results.

Hiernach wurde das Antriebsrad 2 an den Riemen 10 zwischen dem ersten Umlenkrad 8 und dem zweiten Umlenkrad 9 angedrückt. Während das erste Umlenkrad 8 starr bzw. unverschieblich in der Schleifspindeleinheit 4 gelagert ist, gilt dies für das zweite Umlenkrad 9 nicht; dieses ist senkrecht zu seiner Drehachse (die in allen Figuren senkrecht auf der Zeichenebene steht) elastisch bzw. federnd verschieblich gelagert, was durch die Verschieberichtung V in Figur 3 angedeutet ist. Diese elastische Verschiebemöglichkeit besteht allerdings nur bis zu einer Verschiebeweg-Begrenzung 11, die den Maximalwert für eine Verschiebung des zweiten Umlenkrads 9 in Richtung V darstellt.Thereafter, the drive wheel 2 was pressed against the belt 10 between the first deflection wheel 8 and the second deflection wheel 9 . While the first deflection wheel 8 is mounted rigidly or immovably in the grinding spindle unit 4, this does not apply to the second deflection wheel 9; this is perpendicular to its axis of rotation (which is perpendicular to the plane of the drawing in all figures) mounted elastically or resiliently displaceable, which is due to the direction of displacement V in figure 3 is indicated. However, this elastic possibility of displacement only exists up to a displacement limit 11, which represents the maximum value for a displacement of the second deflection wheel 9 in direction V.

Liegen die Kontaktflächen 12 und 13 aneinander, hat sich damit die Konstellation eingestellt, die in Figur 3 illustriert ist. In dieser Stellung umschlingt der Riemen 10 das Antriebsrad 2 um einen Winkel a, der bevorzugt mindestens 30° beträgt. Somit kann zuverlässig das benötigte Drehmoment übertragen werden. Der Riemen 10 hat dabei eine definierte Vorspannung.If the contact surfaces 12 and 13 are on top of each other, the constellation has been set which is shown in figure 3 is illustrated. In this position, the belt 10 wraps around the drive wheel 2 at an angle α, which is preferably at least 30°. The required torque can thus be reliably transmitted. The belt 10 has a defined pretension.

Bezugszeichenliste :List of references:

11
Antriebdrive
22
Antriebsraddrive wheel
33
Basiseinheit der SchleifmaschineBase unit of the grinding machine
44
Schleifspindeleinheit (Schleifarm)grinding spindle unit (grinding arm)
55
Schleifwerkzeuggrinding tool
66
Getriebeelementgear element
77
Treibraddriving wheel
88th
erstes Umlenkradfirst idler wheel
99
zweites Umlenkradsecond idler wheel
1010
Riemen (Zahnriemen)belt (toothed belt)
1111
Verschiebeweg-Begrenzungdisplacement limitation
1212
Kontaktflächecontact surface
1313
Kontaktflächecontact surface
1414
Spannzapfenclamping spigot
1515
Treibriemendrive belt
1616
WelleWave
VV
Richtung der elastischen VerschiebungDirection of elastic displacement
αa
Umfangswinkelcircumferential angle

Claims (9)

  1. Grinding machine, comprising
    - an electric drive (1) with a drive wheel (2), wherein the drive (1) is arranged on a base unit (3) of the grinding machine,
    - a grinding spindle unit (4) detachably arranged on the base unit (3) of the grinding machine and comprising a grinding tool (5), and
    - a gear element (6) which transmits the rotary motion of the drive wheel (2) to the grinding tool (5),
    wherein the gear element (6) comprises:
    - a drive wheel (7) mounted in the grinding spindle unit (4), which is in direct or indirect rotary connection with the grinding tool (5),
    - two deflection wheels (8, 9) mounted in the grinding spindle unit (4), and
    - a belt (10) guided around the drive wheel (7) and the deflection wheels (8, 9),
    wherein, in the mounted state of the grinding spindle unit (4) on the base unit (3), the drive wheel (2) contacts the belt (10) between the two deflection wheels (8, 9) and thereby drives the same,
    characterized in that
    the grinding spindle unit (4) and the base unit (3) of the grinding machine have contact surfaces (12, 13) against which they bear in the assembled state, wherein at least two clamping pins (14) arranged at a distance from one another being arranged on one of the contact surfaces, wherein two corresponding recesses for receiving the clamping pins (14) are arranged on the other of the contact surfaces, wherein locking means are arranged with which the clamping pins (14) can be locked in the recesses so that the grinding spindle unit (4) is releasably fixed in a defined position relative to the base unit (3).
  2. Grinding machine according to claim 1, characterized in that the belt (10) is designed as a toothed belt which is provided with a profiling both on the inside and on the outside.
  3. Grinding machine according to claim 1 or 2, characterized in that the drive wheel (2), the drive wheel (7) and the two deflection wheels (8, 9) are designed as toothed belt wheels.
  4. Grinding machine according to one of claims 1 to 3, characterized in that one of the two deflection wheels (8) is rigidly mounted in the grinding spindle unit (4) and in that one of the two deflection wheels (9) is mounted in the grinding spindle unit (4) so as to be elastically displaceable in the direction (V) perpendicular to its axis of rotation.
  5. Grinding machine according to claim 4, characterized in that a displacement movement limitation (11) is provided for the displacement of the elastically displaceable deflection wheel (9).
  6. Grinding machine according to claim 5, characterized in that the displacement movement limitation (11) for the elastically displaceable deflection wheel (9) is selected in such a way that, in the mounted state of the grinding spindle unit (4) on the base unit (3) of the grinding machine, a predetermined tension is present in the belt (10).
  7. Grinding machine according to one of claims 1 to 6, characterized in that, in the mounted state of the grinding spindle unit (4) on the base unit (3) of the grinding machine, the drive wheel (2) is in contact with the belt (10) over a circumferential angle (α) of at least 30°.
  8. Grinding machine according to one of claims 1 to 7, characterized in that in the grinding spindle unit (4) and in the base unit (3) are arranged releasable coupling means for transmitting a fluid under pressure and/or releasable contact means for transmitting electricity or electrical signals.
  9. Grinding machine according to one of claims 1 to 8, characterized in that the grinding spindle unit (4) is designed as a grinding arm or as an attachment spindle.
EP18168887.0A 2017-05-02 2018-04-24 Grinding machine Active EP3398717B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017004237.3A DE102017004237B4 (en) 2017-05-02 2017-05-02 grinding machine

Publications (2)

Publication Number Publication Date
EP3398717A1 EP3398717A1 (en) 2018-11-07
EP3398717B1 true EP3398717B1 (en) 2022-06-08

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Application Number Title Priority Date Filing Date
EP18168887.0A Active EP3398717B1 (en) 2017-05-02 2018-04-24 Grinding machine

Country Status (6)

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US (1) US10919124B2 (en)
EP (1) EP3398717B1 (en)
JP (1) JP2018187762A (en)
CN (1) CN108789150B (en)
BR (1) BR102018008591A2 (en)
DE (1) DE102017004237B4 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016012915B4 (en) * 2016-10-21 2018-07-26 KAPP Werkzeugmaschinen GmbH Wiper arm for grinding internally profiled workpieces with a grinding wheel
DE102017004237B4 (en) * 2017-05-02 2018-11-15 KAPP Werkzeugmaschinen GmbH grinding machine
CN114346858A (en) * 2021-12-23 2022-04-15 安徽鑫艺达抛光机械股份有限公司 Numerical control three-axis automatic head polishing machine head with replaceable head

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Also Published As

Publication number Publication date
CN108789150B (en) 2022-01-11
CN108789150A (en) 2018-11-13
DE102017004237B4 (en) 2018-11-15
JP2018187762A (en) 2018-11-29
BR102018008591A2 (en) 2018-12-26
US20180318981A1 (en) 2018-11-08
EP3398717A1 (en) 2018-11-07
DE102017004237A1 (en) 2018-11-08
US10919124B2 (en) 2021-02-16

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